.col-flex-container {
  display: flex;
  flex-direction: column; // 主轴垂直
  //align-items: center;  // row 居中对齐
}

.align-items-center {
  align-items: center; //副轴居中对齐
}

.row-flex-container {
  display: flex;
  flex-direction: row; // 主轴水平对齐

}

.space-between {
  justify-content: space-between;
}

.flex-center {
  justify-content: center; // 轴居中方式
  align-items: center; // 副轴居中对齐
}

.row-flex-container .full-vw-item {
  flex: auto;
}

.row-flex-container-flex-end {
  display: flex;
  flex-direction: row;
  justify-content: flex-end; // 从左往右
}

.zoom {
  position: fixed;
  top: 120px;
  right: 20px;
  z-index: 99;
}
